Diagnosis: Asperger's Syndrome. Symptoms often only apparent when under stress. Witnessing a murder qualifies as stress. Russ Dante-math teacher, older brother, hobby artist-has a passion for sunsets and finds comfort in his ritual of capturing the striking colors in his sketchbook with oil pastels. That changes one August evening on a secluded park hilltop when-instead of the sunset he came to sketch-he sees a murder. Before the smoky-blue of twilight falls, Russ is running for his life. The next day, the body is missing. The police pressure Russ for facial descriptions he cannot provide,...